Unlike the TT's of previous incarnations in the old continuity, only Red Robin (Tim Drake) has any direct link to established superheroes. There's also a good idea as to why, in this first volume which is an origin story, these kids get together.
A lot of teen meta-humans have been appearing all over the world and causing a lot of trouble for the authorities. A sinister organisation called NOWHERE (it's an acronym but I'm too lazy to insert the dots) is kidnapping these kids for purposes unknown, but you can bet they aren't good ones. Red Robin has been investigating NOWHERE and blogging about the teenage meta problem. After escape an attempt by them on his life, he tracks down Cassie ("Don't call me Wonder Girl!") Sandsmark just as they attack her. Shortly after following up a lead, he encounters the insectile Skitter. By one of those curious coincidences that only happen in comics, Miguel Jose Barragan (the gay Mexican meta who calls himself Bunker) illegally hops aboard a freight train where he meets a disguised Red Robin with a cocooned Skitter and... And so on.
Amnesiac Kid Flash with a female meta called Solstice (count the number of times her name is misspelled by the letterer), who've escaped from NOWHERE, meet up with the other three and go to the rescue of Cassie ("Don't call...") who is under attack by Superboy.
All in all this is a very promising start to the series. The new characters, technically they're all new, have a lot of potential. The set up is a good one. Writer Scott Lobdell balances action, character beats, humour, and background information all very well so that you can't stop reading because you want to find out what happens next. Brett Booth's art manages to balance an attractive detailed style with just the right hint of cartoon to suggest the original Young Justice. The three letterers need to check their spelling which is a little sloppy at times.
Yet another success for the continuity revamp that is DC's New 52 which is providing the best mainstream superhero stories for years.